Pickup arm driving device in linear tracking pickup apparatus

Details Pickup arm driving device in linear tracking pickup apparatus Pickup arm driving device in linear tracking pickup apparatus

1975-07-21

1977-08-02

Phillips, Charles E.

Undertaking

G11B 312

Patent

active

040391957

ABSTRACT:
A pickup arm driving device in a linear tracking apparatus. The offset angle of the pickup arm is photoelectrically detected to produce a corresponding offset angle signal for driving a motor to move the pickup arm. Completion of the reproduction of sound from a disc causes a groove end detection signal which operates an electromagnetic lifter causing upward swinging of the pickup arm and a quick return of the pickup arm to an arm rest position.

REFERENCES:
patent: 3321766 (1967-05-01), Everest
patent: 3572724 (1971-03-01), Rabinow
patent: 3675932 (1972-07-01), Rabinow

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